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THEODORE P. PECK, O F SAVANNAH, GEORGIA.- Lettcrs Patent No. 70,254, dated October 29, 1867.

IMPROVEMENT In SMOKE-smeris.

TO ALL WHOM I'l MAY CONCERN:

Be it known that I, THEODORE P. PECK, of Savannah, in the county of Chatham, and State of Georgia, have invented a new and useful Improvements on Smoke-Stacks, of which the following is afull, clear, and exact description, reference being had to the accompanying drawing, forming part of this specification, and in which Figure lmepresents a sectional clevationof a smoke-stack constructed according to my improvement.

Figure 2 an inverted plan of the upper portion ofthe outer shell or stack-top, and

i Figure 3 a horizontal section viewed from below, taken as denoted by Vthe-line a: :c in fig. l.

Similar letters of reference indicate corresponding parts.

This my improvement in smoke-stacks is applicable not only ,to locomotives, but also to stationary and marine engines, and my invention consists, firstly, in providing the top or cover of the smoke-stack, on its interior, with wings or their equivalents, radiating from the spark-sieve or catcher that is constructed to allow of the free escape'of the smoke through it, said wings serving to prevent whirling of the sparks withinthe top,

- and to conduct them against thesieve from which they are thrown back into the spark-holder, said smoke-stack in its general arrangement, furthermore, presenting an entirety of a novel character, combining eilicieney with simplicity.

Referring to the accompanying drawing, A. is the interior smoke pipe,l opening into the cone-box B at its bottom. This cone-box, which is or may be cylindrical, with a dat bottom, a, and arched or convex roof b, has its sides, that may be perpendicular, provided with suitable portholes or outlets c. These ports may either be single or double, one above the other, and arranged in any suitable number around the cone-box. Secured to the inside of the topef the box B is the cone C, provided with wings, plates, or flanges d, running from the base to the apex. The number of these wings may vary, butshould preferably correspond with the number of ports e in the conc-box, and be arranged so that the spaces between said wings lie opposite the ports or outlets c, or thcreabouts. Such wings or their equivalents may either be straight or curved, and serve to eid the cone C in turning the motion of the sparks, and throwing them out of the box B through the ports c, and prevent their whirling and clogging the draught. Flutes may be arranged down the cone, toform the equivalents of these wings (Z. The outer shell or spark-holder D, which may be of any suitable shape, is surmounted by a stackcover or top, E, preferably of the ordinary tapering form, and having a direct upper outlet, e, forthe smoke, through a cylindrical sieve or catcher, F, surrounding the smoke outlet, or forming a free downward extension of it. From this sieve, down the interior of the top E, radiate any number of wings or flanges, f. These anges should increase in depth towards the lower edge of the top, and may either be curved or straight. They serve the purpose of preventing the whirling ofthe sparks when the engine exhausts into stack, and to conduct them directly against the sieve F, from whence they are thrown back down into-the spark-holder. The port-holes c of the cone-box I prefer to cover on their outside with bevelled or sloping hoods g, converting the ports into what may beV called ,port-bevels, inclining downwards, for the purpose of shedding the dropping sparks thrown back from the sieve, and to give a downward tendency to the sparks striking said hoods on the inside when passing out from the cone-box. In speaking of sparks, of course is included any solid 'or burning matter other` than smoke, carried up by the draught, the course or courses of the sparks being indicated by arrows -in red, (tig. 1,) and that of the smoke by blue arrows.

By this my improvement it will be seen that while much of the usual complication isavoided, a perfect spark-arrester is produced without choking or clogging of the draught, but rather improving the suction, and giving free egress for the smoke.

What I here claim, and desire to secure by Letters Patent, is

l. The combination with the stack-top or cover E, and sieve or spark-catcher F, of the wings or platesf, arranged for action substantially as described.

`2. A smoke-stack embracing an interior pipe, A, outer shell D, with Vits top or cover E,having.int erior `ribs or wingsf, sieve F, and cone-box B, constructed as described, and provided with a ribbed or winged cone and outlets or port-bevels, or the equivalents of these devices, for operation together as herein set forth, Y

THEODORE P. PEOK.

Witnesses:

E. L. HoLcoMB, WM. D. HARDEN. 

